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The Single UNIX &reg; Specification, Version 2<br>
Copyright &copy; 1997 The Open Group

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<h4><a name = "tag_001_014_1213">&nbsp;</a>NAME</h4><blockquote>
logger - log messages
</blockquote><h4><a name = "tag_001_014_1214">&nbsp;</a>SYNOPSIS</h4><blockquote>
<pre><code>

logger <i>string</i> ...
</code>
</pre>
</blockquote><h4><a name = "tag_001_014_1215">&nbsp;</a>DESCRIPTION</h4><blockquote>
The
<i>logger</i>
utility saves a message, in an unspecified manner and format,
containing the
<i>string</i>
operands provided by the user.
The messages are expected to be evaluated later by personnel
performing system administration tasks.
<p>
It is implementation-dependent whether messages written in
locales other than the POSIX locale are effective.
</blockquote><h4><a name = "tag_001_014_1216">&nbsp;</a>OPTIONS</h4><blockquote>
None.
</blockquote><h4><a name = "tag_001_014_1217">&nbsp;</a>OPERANDS</h4><blockquote>
The following operand is supported:
<dl compact>

<dt><i>string</i><dd>One of the string arguments whose contents are concatenated together,
in the order specified, separated by single space characters.

</dl>
</blockquote><h4><a name = "tag_001_014_1218">&nbsp;</a>STDIN</h4><blockquote>
Not used.
</blockquote><h4><a name = "tag_001_014_1219">&nbsp;</a>INPUT FILES</h4><blockquote>
None.
</blockquote><h4><a name = "tag_001_014_1220">&nbsp;</a>ENVIRONMENT VARIABLES</h4><blockquote>
The following environment variables affect the execution of
<i>logger</i>:
<dl compact>

<dt><i>LANG</i><dd>Provide a default value for the internationalisation variables
that are unset or null.
If
<i>LANG</i>
is unset or null, the corresponding value from the
implementation-dependent default locale will be used.
If any of the internationalisation variables contains an invalid setting, the
utility will behave as if none of the variables had been defined.

<dt><i>LC_ALL</i><dd>
If set to a non-empty string value,
override the values of all the other internationalisation variables.

<dt><i>LC_CTYPE</i><dd>
Determine the
locale for the interpretation of sequences of bytes of text data as
characters (for example, single- as opposed to multi-byte characters
in arguments).

<dt><i>LC_MESSAGES</i><dd>
Determine the locale that should be used to affect
the format and contents of diagnostic
messages written to standard error.
(This means diagnostics from
<i>logger</i>
to the user or application, not diagnostic messages
that the user is sending to the system administrator.)

<dt><i>NLSPATH</i><dd>
Determine the location of message catalogues
for the processing of
<i>LC_MESSAGES .
</i>
</dl>
</blockquote><h4><a name = "tag_001_014_1221">&nbsp;</a>ASYNCHRONOUS EVENTS</h4><blockquote>
Default.
</blockquote><h4><a name = "tag_001_014_1222">&nbsp;</a>STDOUT</h4><blockquote>
Not used.
</blockquote><h4><a name = "tag_001_014_1223">&nbsp;</a>STDERR</h4><blockquote>
Used only for diagnostic messages.
</blockquote><h4><a name = "tag_001_014_1224">&nbsp;</a>OUTPUT FILES</h4><blockquote>
Unspecified.
</blockquote><h4><a name = "tag_001_014_1225">&nbsp;</a>EXTENDED DESCRIPTION</h4><blockquote>
None.
</blockquote><h4><a name = "tag_001_014_1226">&nbsp;</a>EXIT STATUS</h4><blockquote>
The following exit values are returned:
<dl compact>

<dt>0<dd>Successful completion.

<dt>&gt;0<dd>An error occurred.

</dl>
</blockquote><h4><a name = "tag_001_014_1227">&nbsp;</a>CONSEQUENCES OF ERRORS</h4><blockquote>
Default.
</blockquote><h4><a name = "tag_001_014_1228">&nbsp;</a>APPLICATION USAGE</h4><blockquote>
This utility allows logging of information for later use by
a system administrator or programmer in determining why
non-interactive utilities have failed.
The locations of the saved messages, their format and retention period
are all unspecified.
There is no method
for a portable application to read messages, once written.
</blockquote><h4><a name = "tag_001_014_1229">&nbsp;</a>EXAMPLES</h4><blockquote>
A batch application, running non-interactively,
tries to read a configuration file and fails; it may
attempt to notify the system administrator with:
<pre>
<code>
logger myname: unable to read file foo. [timestamp]
</code>
</pre>
</blockquote><h4><a name = "tag_001_014_1230">&nbsp;</a>FUTURE DIRECTIONS</h4><blockquote>
None.
</blockquote><h4><a name = "tag_001_014_1231">&nbsp;</a>SEE ALSO</h4><blockquote>
<i><a href="mailx.html">mailx</a></i>,
<i><a href="write.html">write</a></i>.
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UNIX &reg; is a registered Trademark of The Open Group.<br>
Copyright &copy; 1997 The Open Group
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